Home / 81,424.48-122,155.80-25,261.72

Finding the Fourth Proportional to 81,424.48, 122,155.80 and 25,261.72

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Solution

The fourth proportional to 81,424.48, 122,155.80 and 25,261.72 is: 37,898.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.48 : 122,155.80 = 25,261.72 : x
  2. Step 2: Convert to fraction form
    81,424.48/122,155.80 = 25,261.72/x
  3. Step 3: Cross multiply
    81,424.48x = 122,155.80 × 25,261.72
  4. Step 4: Simplify right side
    81,424.48x = 3,085,865,615.98
  5. Step 5: Solve for x
    x = 3,085,865,615.98/81,424.48
  6. Step 6: Final answer
    x = 37,898.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.